Abstract: A workpiece (22) having a periphery is centered using a centering apparatus (20) having a workpiece spindle (24, 28) operable to rotate the workpiece (22) about a rotational axis (26), and a centering head (29). The centering head (29) includes a mount (30) movable in a movement direction lying in a plane (40) perpendicular to the rotational axis (26), and generally along a radial line (38) extending outwardly from the rotational axis (26). A swivel head (32) is pivotably supported on the mount (30) and is pivotable about a pivot axis (46) parallel to the rotational axis (26). The swivel head (32) has a pair of bearings (66) spaced apart along a direction lying generally perpendicular to the movement direction, with the bearing axis of each bearing (46) parallel to the rotational axis (26). A distance measuring device (34) is operable to measure the distance between the periphery of the workpiece (22) and a measurement location on the mount (30).

Abstract: A clamp and clamping technique which provides a secure attachment to a wire or cable with minimal damage thereto. The inventive clamp (10)includes an elongate bolt (14). The distal end is threaded and has first, second and third bores (18, 20 and 22) therein. The first bore (18) extends along the longitudinal axis of the bolt (14). The second bore (20) extends through the bolt (14) along a second axis transverse to the longitudinal axis. The second bore (20) is in communication with the first bore (18). The third bore (22) extends through the distal end of the bolt (14) parallel to the second bore (20). A nut (16) is provided which is adapted for threaded engagement with the distal end of the bolt (14). In accordance with the novel method, a wire or cable (28) is fed through the nut (16) and the first, second, and third bores (18, 20 and 22) in no particular order. The wire or cable (28) is wrapped around the distal end of the bolt (14) and secured to the bolt (14) by the nut (16).

Abstract: An angular adjustment mechanism (11) for precisely adjusting an eyepiece (12) of an optical assembly (10) through the use of a parallel action joint lever system. The parallel action joint lever system acts to allow the eyepiece (12) and a mirror (24), disposed within the assembly (10), to rotate about a common axis (28), with the eyepiece (12) rotating at two times the angular speed of the mirror (24). The relative angular movement of the eyepiece (12) and the mirror (24) allows a user to obtain a comfortable viewing position without disturbing the alignment of the optical assembly (10). Furthermore, the relative angular movement of the eyepiece (12) and the mirror (24) does not effect the imaging of the optical assembly (10), or cause optical image shifts.

Abstract: An angular adjustment mechanism (11) for precisely adjusting an eyepiece (12) of an optical assembly (10) through the use of a system of levers. The system of levers acts to allow the eyepiece (12) and a mirror (24), disposed within the assembly (10), to rotate about a common axis (28), with the eyepiece (12) rotating at two times the angular speed of the mirror (24). The relative angular movement of the eyepiece (12) and the mirror (24) allows a user to obtain a comfortable viewing position without disturbing the alignment of the optical assembly (10). Furthermore, the relative angular movement of the eyepiece (12) and the mirror (24) does not significantly effect the imaging of the optical assembly (10), or cause optical image shifts.